Secondary processing of electron backscatter data from an aluminum alloy

The aim of this paper is to show how secondary data processing of electron backscatter diffraction data has been used to glean additional information such as proportions of selected individual texture variants and distributions of misorientation angles between contiguous grains/subgrains. For this purpose, experimental work was performed on a continuously recrystallized commercial Al-Fe-Si alloy. Deconvolution of the microtexture showed the major components to be the S texture, Cu texture, and {436}[323] texture. Further analysis revealed that from the S textures {123}[634] and {123}[412], only two of the possible four were present-that is, (123)[<(63)over bar 4>]/(213)[<(36)over bar 4>] and (123)[<(41)over bar 2>]/(213)[<(14)over bar 2>], respectively. The distribution of misorientation angles indicated that the proportion of boundaries at 0-15 degrees was higher than that expected in a random distribution. Also, the higher proportion observed at 50-60 degrees was explained by the adjacency in the microstructure of texture variants that were twin related. (C) Elsevier Science Inc., 1996